．______Hard you may try, you can’t possibly persuade Tom to give up smoking, for he is so addicted to it.
| A．Whatever | B．However | C．Whichever | D．Whenever |
_____ good, these cookies sell well.
| A．Smelled | B．Smelling | C．Being smelled | D．To smell |
What ______ public is concerned about is whether medical workers and scientists will be able to find for this new disease in a short time.
| A．不填;不填 | B．不填;the | C．the;不填 | D．the;a |
Knowing how long the test would last, the students who finished ____ back and waited until the end of the exam.
| A．settle | B．settled | C．settling | D．to settle |
The captain ordered the crew to throw ____ the side of the ship all heavy guns and even stores in order to raise the boat in the water.
| A．on | B．through | C．across | D．over |
---What do you think of the dinner in Mr Brown's?
---Oh, great! We have never had a better one. It's a dinner of twenty ____.
| A．drinks | B．people | C．tables | D．courses |